Tensioning gripper for ondotological use

Details Tensioning gripper for ondotological use Tensioning gripper for ondotological use

1995-06-21

1996-12-17

Lucchesi, Nicholas D.

Dentistry

Apparatus

Hand manipulatable implement

433 39, A61C 504

Patent

active

055846920

ABSTRACT:
In a tensioning gripper with a ring and a coaxially arranged rotary pin, both the ring and the pin are provided with a slot suitable for receiving a matrix to be tensioned. The slot of the rotary pin has a symmetry plane parallel to the longitudinal axis of the rotary pin. The sides of the slot are composed by two angled portions which are arranged symmetrically on both sides of the symmetry plane and both portions converge towards the longitudinal axis of the rotary pin, the two vertices of the portions being opposite and adjacent one another. Such a slot allows easy introduction and gripping of the matrix until, by rotating the pin, the matrix is held and tensioned.

REFERENCES:
patent: 1359665 (1920-11-01), Borkin
patent: 2218774 (1940-10-01), Strell
patent: 2595850 (1952-05-01), Hicks
patent: 2687573 (1954-08-01), Stone
patent: 2995822 (1961-08-01), Tofflemire
patent: 4396374 (1983-08-01), Ericson
patent: 4551097 (1985-11-01), Lazarus

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